Trying out the ghdl example ci

.gitea/workflows/ghdl_example.yaml

@@ -0,0 +1,33 @@
+name: Test
+
+on:
+  [push]
+
+jobs:
+
+
+  ubuntu:
+    strategy:
+      fail-fast: false
+      matrix:
+        backend: [ '', mcode, llvm, gcc ]
+        version: [ 20.04, 22.04, latest ]
+    runs-on: ubuntu-${{ matrix.version }}
+    name: '🐧 Ubuntu ${{ matrix.version }} · ${{ matrix.backend }}'
+    steps:
+
+    - name: '🧰 Checkout'
+      uses: actions/checkout@v4
+
+    - name: Run Action
+      uses: ./
+      with:
+        backend: ${{ matrix.backend }}
+
+    - name: Test
+      run: |
+        echo "GHDL_PREFIX: $GHDL_PREFIX"
+        echo "GHDL: $GHDL"
+        echo "GHDL_LIBS: $GHDL_LIBS"
+        ghdl --version
+        $GHDL --version